Experimental Investigation of the Evolution of Gaussian Quantum Discord in an Open System

Publication: Research - peer-review › Journal article – Annual report year: 2012

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Experimental Investigation of the Evolution of Gaussian Quantum Discord in an Open System. / Madsen, Lars S.; Berni, Adriano ; Lassen, Mikael ; Andersen, Ulrik L.

In: Physical Review Letters, Vol. 109, No. 3, 2012, p. 030402.

Publication: Research - peer-review › Journal article – Annual report year: 2012

In: Physical Review Letters, Vol. 109, No. 3, 2012, p. 030402.

Publication: Research - peer-review › Journal article – Annual report year: 2012

Bibtex

@article{1fa9953884a74cf5a895f4212b035dd0,

title = "Experimental Investigation of the Evolution of Gaussian Quantum Discord in an Open System",

publisher = "American Physical Society",

author = "Madsen, {Lars S.} and Adriano Berni and Mikael Lassen and Andersen, {Ulrik L.}",

note = "2012 American Physical Society",

year = "2012",

volume = "109",

number = "3",

pages = "030402",

journal = "Physical Review Letters",

issn = "0031-9007",

}

RIS

TY - JOUR

T1 - Experimental Investigation of the Evolution of Gaussian Quantum Discord in an Open System

A1 - Madsen,Lars S.

A1 - Berni,Adriano

A1 - Lassen,Mikael

A1 - Andersen,Ulrik L.

AU - Madsen,Lars S.

AU - Berni,Adriano

AU - Lassen,Mikael

AU - Andersen,Ulrik L.

PB - American Physical Society

PY - 2012

Y1 - 2012

N2 - Gaussian quantum discord is a measure of quantum correlations in Gaussian systems. Using Gaussian discord, we quantify the quantum correlations of a bipartite entangled state and a separable two-mode mixture of coherent states. We experimentally analyze the effect of noise addition and dissipation on Gaussian discord and show that the former noise degrades the discord, while the latter noise for some states leads to an increase of the discord. In particular, we experimentally demonstrate the near death of discord by noisy evolution and its revival through dissipation.

AB - Gaussian quantum discord is a measure of quantum correlations in Gaussian systems. Using Gaussian discord, we quantify the quantum correlations of a bipartite entangled state and a separable two-mode mixture of coherent states. We experimentally analyze the effect of noise addition and dissipation on Gaussian discord and show that the former noise degrades the discord, while the latter noise for some states leads to an increase of the discord. In particular, we experimentally demonstrate the near death of discord by noisy evolution and its revival through dissipation.

UR - http://www.aps.org/

U2 - 10.1103/PhysRevLett.109.030402

DO - 10.1103/PhysRevLett.109.030402

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 3

VL - 109

SP - 030402

ER -